Diadema to Reykjavik: time difference
Reykjavik is 3 h ahead of Diadema. Live clocks for both, the working hours they share, and how each one sits against your own time.
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Diadema 02:20 2:20 AM Reykjavik 05:20 5:20 AM You –:–
02:20 2:20 AM
Brasilia Standard Time · UTC-3
☀️ 05:28 · 🌙 18:15
05:20 5:20 AM
Greenwich Mean Time · UTC+0
☀️ 08:39 · 🌙 17:47
·
+3 h
Reykjavik is 3 h ahead of Diadema.
When you, Diadema and Reykjavik are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇧🇷 Diadema
0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM
🇮🇸 Reykjavik
3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM 0 12 AM 1 1 AM 2 2 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇧🇷 Diadema | 🇮🇸 Reykjavik |
|---|---|---|
| Local time | 02:20 | 05:20 |
| Local date | Thursday, October 22, 2026 | Thursday, October 22, 2026 |
| Time zone | Brasilia Standard Time | Greenwich Mean Time |
| UTC offset | UTC-3 | UTC+0 |
| Offset from Diadema | — | +3 h |
| IANA zone | America/Sao Paulo | Atlantic/Reykjavik |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:28 | 08:39 |
| Sunset | 18:15 | 17:47 |
| Daylight | 12 h 47 min | 9 h 7 min |
| People on this clock | 393,237 | 136,894 |
Compare Diadema with another city
More comparisons with Diadema: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Diadema and Reykjavik: common questions
What is the time difference between Diadema and Reykjavik?
Reykjavik is 3 hours ahead: it uses UTC+0, while Diadema is on UTC−3.
If it is 9:00 AM in Diadema, what time is it in Reykjavik?
At 9:00 AM in Diadema, clocks in Reykjavik show 12:00 PM.
What time is it in Reykjavik when it is 6:00 PM in Diadema?
When it is 6:00 PM in Diadema, it is 9:00 PM in Reykjavik.
Is there a time when both Diadema and Reykjavik are at work?
Yes: from 9:00 AM to 3:00 PM in Diadema (12:00 PM to 6:00 PM in Reykjavik), the working days (9:00 AM–6:00 PM) overlap.
From what time in Diadema is it tomorrow in Reykjavik?
Once it is 9:00 PM in Diadema, the date in Reykjavik has already changed. Until 3:00 AM in Reykjavik, it is still the previous day in Diadema.
Does the time gap between Diadema and Reykjavik change during the year?
No, the clocks change neither in Diadema nor in Reykjavik, so the gap is 3 hours all year round.
